Question # 1

A layer over the central core of the jacke is called.

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Jacket

Plastic

Cladding

Rubber

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

The speed of sound in ari at 0 ^oC is 332 ms-1, Then the speed at 40 ^oC will be

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372 ms-1

356 ms-1

346 ms-1

332 ms-1

The focal length of convex lens

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Negative

Positive

small

Large

Law of physics expressed in term of

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Base quantites

Derived quantities

a and b

None of these

The concentration of red blood cells in the blood is nearly.

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40%

60%

25%

50%

Errors due to incorrect design of a device are called

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Random Error

Systematic Error

Physical Error

None of these

Sound waves can not be

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Reflected

Refracted

Polarized

Diffracted

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

The Idea that light is electromagnetic waves was indroduced by

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Maxwell Planck

Newton

Fermi

Crooks

The ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

The angle between circumference of a circle and center is

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The number of significant figure in 8.80 x 10⁶ kg is

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1

3

6

5

Size of the molecules is much smaller as compared to the

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Mass of the molecules

Distance between the molecules

Density of the molecules

Volume of the molecules

Horizontal range is maximum when the angle of projectile is.

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0 o

30 o

45 o

60 o

The trajectory of a projectile is.

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Circle

Parabola

Hyperbola

Straight line

Minimum number of unequal forces whose vector sum can be zero are.

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5

4

3

2

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